Reamer for tobacco pipes



Feb. 28, 1939. v R, BJBRINNON ET AL 2,149,206

REAMER FOR TOBACCO PIPES Filed June 21, 1937 FIG. 7 12 23 F 16. 9

Z! 18 X1 X1 A l 7 25 2 z z 0 g d INVENTOR v 21 XI '22 '1 Z2 .5 BY 32%.. 5552" 711/1 LI/I114 ATTQRNEY.

Patented Feb. 28, 1939 PATENT QFFiCE 2,149,20 aEAMEn son 'roBAooo PIPES 'l tic hard Brinnon and Max D. Brinnon, 'Wichita, Karla, 'assignors to Ethel B. Brinnon, Wichita,

Kai

Application June 21, 1937, Serial No. 149,389

" 2 Claims. (01. 131-13) Our invention relates to an improvement in tobacco pipe reamers. The object of our reamer is to provide a device that will expand uniformly in a pipe bowl so that the reamer may be turned '5 to scrape or ream the burnt or caked tobacco from the wall of-the pipe bowl. Another object is to provide a reamer of the kind mentioned that will automatically adjustitself to the pipe bowl when placed therein.

lo 9 Quite often a pipe bowl will not cake evenly, therefore the reamer should, and our improved reamer will adjust itself to the shape of the bowl rather than to the shape of the cake therein.

These and other objects will be more fully explained as this description progresses.

Now referring to the accompanying drawing; Fig. 1 is a side view of a pipe, partly shown in section and illustrating how the pipe reamer is applied and used. Fig. 2 is a plan view of the elements" shown in Fig. 1. Fig. 3 is a side view of our'improved pipe reamer. Fig. 4 is a sectional view taken along the line IV-IV in Fig. 1. Fig. 5 is an edge View of. the reamer. Fig. 6 is a sectional view taken along the line VIVI in Fig. 5. Fig. '7 is a side View of the outside frame element of the reamer. Fig. 8 is a side view of the reamer blades. Fig. 9 is a side view of the expansion operator blade. Fig. 10 is an enlarged detail side view of the :central portion of the expansion operatorblade showingin detail the pin that operates the reamer blades. Fig. 11 is an enlarged detail sectional View through the operator blade, the view being taken along the line XI-XI in Figures 9 and 10. In the drawing, similar numerals of reference designate the same part throughout the several figures of the drawing.

The device comprises a U-shaped housing element |2 in which is positioned a pair of reamer blades l3 and I4. Between the reamer blades l3 and I4 is positioned an operating blade |5.

The lower end and side portions of the reamer blades l3 and M are curved to fit the contour of the pipe bowl as shown in Fig. 1. Both of the blades l3 and M are identical. These blades are provided with pairs of slots l6 and l1, l6 and I1, that are parallel to each other and are positioned at approximately a 15 degree angle with respect to the center line of the blade. At I8 is a slot in each of the scraper blades l3 and I! that 50 is positioned intermediate the slots l6 and I1,

and intermediate the slots l6 and I1, and is at right angles with the center line of the blade.

The expansion operator blade, (see Fig. 9), is the same width as the U-shaped frame element 56 I2 and the reamer blades l3 and M. The blade I5 is provided with a pair of slots l9 and that are positioned one above the other and on the center axis of the blade l5. In the blade l5 and intermediate the slots l9 and ZG/and on the center axis of. the blade I5 is a pin 2| that projeots on each side of the blade |5 the distance of the thickness of the blades l3 and M. The pin 2| is rigidly attached to the blade l5 by any suitable method; in the drawing the attachment is shown as being made by making small earlike portions 22 out of the pin 2| and against the sides of the blade I5. The blade I5 is slightly longer from the pin 2| to the lower tip of the blade than the reamer blades are from the slot Hi to the lower point of the blade l3 or M, the object of which will later be made obvious. 1 'Bothsides of theU-shaped frame element 2 are provided with holes 23, 24 and 25 and the holes are'so positioned that theholes register with each other in each side of the U-shaped piece |2.

Now to assemble the reamer, reamer blades I3 and M are placed, one on each side of the expansion operator blade l5, in such a position that the pin'Z! enters the slot is in each reamer blade l3 and I4 and the slots l6 and ii in the blade |3 run to one side of the center line of the blade and the slots l6 and I1 in the blade l4 run to the opposite side of the center line of the blade. The three blades I3, l4 and I5 being so assembled arenow slipped between the sides of the U-shaped frame element |2 in such a positionthat a rivet 26 may be passed through the holes 24 in the U-shaped frame element l2 and the slots 6 and IS in the reamer blades l3 and I4 and the slot H3 in the expansion operator blade l5; and another rivet 21 may be passed through the holes 25 in the U-shaped frame element l2 and through the slots l1 and H in the plates l3 and |4. The rivets 26 and 21 are then riveted to rigidly hold the sides of the U-shaped frame element 2 together and allow just enough clearance between the three blades I3, l4 and I5 and the sides of the U-shaped frame element l2 that the blades |3, l4 and I5 may be easily shipped up and down between the sides of the U-shaped frame element l2. It will be understood that the pin 2| fits in the slot I8 in the blades l3 and M as closely as possible without binding therein. Likewise, the rivets 26 and 21 fit in the slots l6 and l1, l6 and H, in the reamer blades I3 and M, and in the slots l9 and 20 in the expansion operator blade l5 as closely as possible without binding therein so that the assembly of the three blades l3, l4 and l5 may be moved up and down between the sides of the lU-shaped frame element I2 with as little resistance as possible. The holes 23 in the U-shaped frame element may be employed to receive a key ring or the like so that the reamer may be carried on a key ring, or it may be hung up if desired.

The reamer operates as follows; The blades I3, I4 and I5 are placed in the collapsed and downwardly extended position as shown in Fig. 3, then the reamer entered, blades downwardly, in the bowl 28 of the pipe until the point I 5a of the blade I5 strikes the bottom 28a of the bowl of the pipe and upon the continued downward movement of the U-shaped frame element I2, the reamer blades I3 and I 4 are forced to move outwardly by reason of the pin 2| which prevents the reamer blades from moving longitudinally but permits them to move laterally with respect to the center blade I 5, therefore as the U-shaped frame element is pushed downwardly the rivets 26 and 21 advance downwardly in the slots I6 and I! in the reamer blades I3 and I l and in the slots I9 and 23 in the blade I5, whereupon the reamer blades I3 and I4 are forced to move outwardly until the outer edges and lower end portions of the reamer blades engage the side walls 28b of the pipe bowl or the cake positioned thereon.

Now by revolving the reamer in the bowl of the pipe the cake is reamed out and as it is reamed out the reamer blades I3 and M will continue to expand to meet the increasing interior diameter of the pipe bowl.

It is obvious that the pin 2| on the blade I5 retains the reamer blades I3 and M in equal positions so that one blade cannot take a position higher or lower than the other. In view of this, it is obvious that the reamer blades I3 and It must, when they move, travel inwardly or outwardly in equal amounts of movement. Due to the relative position and relationship of the slots I6 and I1, I6 and IT, in the reamer blades I3 and I d, it is obvious that the reamer blades I3 and M will always be parallel to each other, therefore the outside edges of the reamer blades will always ream a shape corresponding to the shape of the bowl of the pipe regardless of the contour of the cake formed on the walls of the bowl of the pipe. This is a desirable feature because the position of the reamer blades in the wall of the bowl is not altered by the irregular shape of the cake, therefore a good job of reaming may be done without digging into the wall of the pipe bowl at the top or bottom before the cake is removed from the intermediate portion of the pipe bowl.

Such modifications of our invention may be employed without departing from the spirit and intention of the invention as lie within the scope of the appended claims.

Now having fully described our invention, what we claim as new and desire to secure by Letters Patent is;

1. In a reamer device for tobacco pipes; a frame element and three blades positioned in said frame element, said blades being slidably mounted in said frame element, and means in said device whereby the longitudinal movement of one of said blades will cause the other two blades to move inwardly or outwardly in opposite directions from each other.

2. In a reamer for tobacco pipes; a frame elemerit, a pair of reamer blades and an expansion operator blade, said expansion operator blade being positioned between the two reamer blades, and the reamer blades being positioned between the sides of the frame element; a pair of diagonally positioned slots and .a transverse slot in each of said reamer blades, said reamer blades being so positioned in relation to each other that the diagonally positioned slots in one of said reamer blades is positioned in the opposite, diagonal direction from those in the other reamer blade; said expansion operator blade having a pair of slots that are spaced apart and are positioned on the center axis of the expansion operator blade, a pin on said expansion operator blade, said pin extending on each side of the expansion operator blade the distance of the thickness of the reamer blades, and said pin being positioned in the transverse slot in each of the reamer blades; and a pair of rivets carried by said frame element, said rivets passing through said diagonally positioned slots in said reamer blades and also through the slots in the expansion operator blade so that upon the movement of the expansion operator blade up or down in the frame element the reamer blades will be carried therewith and the sliding motion of the diagonal slots on the rivets will cause the outward or inward movement of the reamer blades.

RICHARD B. BRINN ON. MAX D. BRINNON. 

